IBM Interview Experience For Software Developer Internship (On-Campus) 2023

IBM visited our campus at the end of September for the role of Software Developer. (Internship + Fulltime)

There were a total of 3 rounds.

Coding Round:

This round consists of 2 questions ( array and string-based) which we have to complete within 1 hour. Questions were easy to medium.

Technical Interview Round:

In this round, there were two interviewers. Initially, they told me the instructions like I have to share the complete screen and need to turn on the camera for the entire process. The interview lasted for 1 hour 15 mins. There were a few coding questions, initially, they asked me to implement a stack from scratch, and after that, they told me to dry run the code for various test cases given by them, they just wanted to make sure whether I was considering corner cases or not. Then some questions on the stack like where the stack is implemented in real life, How recursion work, How memory is allocated in runtime, Difference between heap memory and stack memory, What happens when we compile a code, How to merge two unsorted vectors and which data structure to use in this case, Checking whether a linked list is circular or not.

Then there were open-ended questions like ACID properties in DBMS, aggregate functions in SQL, how they process queries fast, SOLID principles, OOPs concepts with examples, collections in Java, interface in Java, SQL injection, fast and slow pointers, smart pointers, SQL vs NoSQL, Joins in SQL, Abstract classes, REST API, Kubernetes, Questions on cloud (AWS services, IAM account), Encryption, decryption, Certificates, JDBC in project, write connection code for the project, questions on public key and private key in AWS.

Technical + HR:

In this round, there were two interviewers. Initially, for around 25 minutes there was a discussion on the project. Then they gave 2 coding questions, asked a puzzle, and some questions on AWS (mentioned in my resume). Then they asked for my plans of post-graduation and regarding relocation.